UPSC-CMS 2016 — Pathology

Q: Presence of signet-ring cells in a cellular or myxomatous stroma is diagnostic of:

Krukenberg tumour. ***Krukenberg tumour*** - **Krukenberg tumours** are characterized by mucin-filled **signet-ring cells** within a fibrous or myxomatous stroma. [1] - They represent metastatic adenocarcinomas, commonly originating from the **gastrointestinal tract**, particularly the stomach. [1] *Gynandroblastoma* - This is a rare **sex cord-stromal tumour** of the ovary that contains both female **(granulosa/theca cells)** and male **(Sertoli/Leydig cells)** components. - It does not typically feature signet-ring cells. *Hilus cell tumour* - **Hilus cell tumours** are **Leydig cell tumours** found in the ovarian hilum, characterized by cells containing **Reinke crystals**. - These tumours are associated with **androgen production** and virilization, and do not contain signet-ring cells. *Struma ovarii* - **Struma ovarii** is a specialized form of **ovarian teratoma** in which **thyroid tissue** is the predominant component (more than 50%). - While it can be functional and cause hyperthyroidism, it is not characterized by the presence of signet-ring cells. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Gastrointestinal Tract, p. 779. [Practice more Pathology PYQs on OnCourse]

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Presence of signet-ring cells in a cellular or myxomatous stroma is diagnostic of: